Recent News
CVE-2026-27820: Buffer overflow vulnerability in Zlib::GzipReader
A buffer overflow vulnerability exists in Zlib::GzipReader. This vulnerability has been assigned the CVE identifier CVE-2026-27820. We recommend upgrading the zlib gem.
Posted by hsbt on 5 Mar 2026
Ruby 4.0.0 Released
We are pleased to announce the release of Ruby 4.0.0. Ruby 4.0 introduces “Ruby Box” and “ZJIT”, and adds many improvements.
Posted by naruse on 25 Dec 2025
A New Look for Ruby's Documentation
Following the ruby-lang.org redesign, we have more news to celebrate Ruby’s 30th anniversary: docs.ruby-lang.org has a completely new look with Aliki—RDoc’s new default theme.
Posted by Stan Lo on 23 Dec 2025
Redesign our Site Identity
We are excited to announce a comprehensive redesign of our site. The design for this update was created by Taeko Akatsuka.
Posted by Hiroshi SHIBATA on 22 Dec 2025
Ruby 4.0.0 preview3 Released
We are pleased to announce the release of Ruby 4.0.0-preview3. Ruby 4.0 introduces Ruby::Box and “ZJIT”, and adds many improvements.
Posted by naruse on 18 Dec 2025